CN116396678A - Normal-temperature curing radiation coating slurry, radiation coating and preparation method thereof - Google Patents
Normal-temperature curing radiation coating slurry, radiation coating and preparation method thereof Download PDFInfo
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- CN116396678A CN116396678A CN202111612007.5A CN202111612007A CN116396678A CN 116396678 A CN116396678 A CN 116396678A CN 202111612007 A CN202111612007 A CN 202111612007A CN 116396678 A CN116396678 A CN 116396678A
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- 230000005855 radiation Effects 0.000 title claims abstract description 139
- 239000011248 coating agent Substances 0.000 title claims abstract description 67
- 238000000576 coating method Methods 0.000 title claims abstract description 67
- 239000006255 coating slurry Substances 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 101
- 239000000843 powder Substances 0.000 claims abstract description 92
- 239000000945 filler Substances 0.000 claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 239000011347 resin Substances 0.000 claims abstract description 39
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 229910052849 andalusite Inorganic materials 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 27
- 229910052582 BN Inorganic materials 0.000 claims abstract description 25
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 25
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000654 additive Substances 0.000 claims abstract description 21
- 230000000996 additive effect Effects 0.000 claims abstract description 21
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 20
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052644 β-spodumene Inorganic materials 0.000 claims abstract description 19
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 16
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 16
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 239000011863 silicon-based powder Substances 0.000 claims description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 6
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 5
- MANYRMJQFFSZKJ-UHFFFAOYSA-N bis($l^{2}-silanylidene)tantalum Chemical compound [Si]=[Ta]=[Si] MANYRMJQFFSZKJ-UHFFFAOYSA-N 0.000 claims description 5
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 claims description 5
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 4
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 4
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 4
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 4
- 229910021343 molybdenum disilicide Inorganic materials 0.000 claims description 4
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 3
- GQVVQDJHRQBZNG-UHFFFAOYSA-N benzyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CC1=CC=CC=C1 GQVVQDJHRQBZNG-UHFFFAOYSA-N 0.000 claims description 3
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- 229920002050 silicone resin Polymers 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 9
- 239000010703 silicon Substances 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000010453 quartz Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 229960001124 trientine Drugs 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2289—Oxides; Hydroxides of metals of cobalt
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention provides normal temperature curing radiation coating slurry, a radiation coating and a preparation method thereof. The radiation coating slurry comprises resin, solvent, additive, radiation agent and filler, wherein the resin comprises organic silicon resin and/or epoxy resin; the additive comprises a coupling agent and a catalyst; the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene. The components of the radiation coating slurry are matched cooperatively to realize normal-temperature solidification, can be stood and solidified at normal temperature without high-temperature heat treatment, and can be used for being sprayed on the surface of the light heat protection material to obtain the radiation coating suitable for the light heat protection material; the waterproof and moistureproof performance is achieved, and the waterproof and moistureproof requirements of environments such as room temperature are met; the components of the filler are mutually cooperated and are blended with the resin, and the filler is solidified at normal temperature, but can be stably used in an environment within 1500 ℃.
Description
Technical Field
The invention relates to the technical field of coating protection, in particular to normal-temperature curing radiation coating slurry, a radiation coating and a preparation method thereof.
Background
The aerospace craft can be severely started and heated in the flying process, the surface temperature is increased, in order to ensure the normal operation of all elements of the aerospace craft, the surface of the aerospace craft is covered with a heat protection material to prevent heat from being transmitted to the inside, and then a radiation coating is prepared on the surface of the heat protection material to meet the high-temperature radiation requirement of the heat protection material.
In the prior art, a quartz fiber heat-insulating tile is generally used as a heat protection material, and the surface of the quartz fiber heat-insulating tile is coated with radiation coating slurry, and the radiation coating is obtained after high-temperature heat treatment. The high-temperature heat treatment of the radiation coating slurry has limitation on the heat protection material, and the heat protection material must be selected from materials which can withstand the high-temperature heat treatment of the radiation coating slurry coated on the surface of the material and cannot withstand the high-temperature heat treatment of the radiation coating slurry, so that the material cannot be used as the heat protection material.
With the improvement of the requirements of the aerospace craft on light weight, heat insulation performance and the like, the light weight heat protection material is favored in the heat protection field, however, the current light weight heat protection material, especially the light weight quartz fiber preform reinforced modified phenolic aerogel composite material, cannot bear the high temperature heat treatment of the current radiation coating slurry on one hand and cannot prepare the current radiation coating on the surface of the current radiation coating slurry; on the other hand, the surface of the aircraft is rough and not compact, the problems of water resistance, moisture resistance and the like are difficult to solve in the environment such as room temperature, and the problems of influence on the safety of the aircraft due to weight gain caused by water absorption are easy to occur. Therefore, there is a need in the art for a radiation coating slurry that can be cured at room temperature and a radiation coating prepared from the radiation coating slurry to solve the problems that the existing radiation coating is not suitable for light thermal protection materials, and there is no radiation coating that can meet the requirements of the light thermal protection materials on the high temperature working environment of an aircraft and the water and moisture resistance in the environment such as room temperature.
Disclosure of Invention
The invention provides normal-temperature curing radiation coating slurry, a radiation coating and a preparation method thereof, which are used for solving the problems that the existing radiation coating is not suitable for light heat protection materials and does not have the radiation coating which can meet the requirements of the light heat protection materials on the high-temperature working environment of an aircraft, the water resistance and the moisture resistance of the environment at room temperature and the like.
In one aspect, the present invention provides a room temperature curing radiation-coated slurry comprising a resin, a solvent, an additive, a radiation agent, and a filler, wherein the resin comprises a silicone resin and/or an epoxy resin; the additive comprises a coupling agent and a catalyst; the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene.
In some embodiments of the invention, the solvent is selected from one or more of absolute ethanol, N-propanol, isopropanol, N-butanol, N 'N-dimethylformamide, N' N-dimethylacetamide and acetone.
In some embodiments of the present invention, the coupling agent comprises a silane coupling agent selected from at least one of gamma-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, vinyl triethoxysilane, benzyl trimethoxysilane, and aminopropyl trimethoxysilane.
In some embodiments of the invention, the catalyst is selected from one or more of dibutyltin dilaurate, zinc naphthenate, butyl titanate, ethylenediamine, diethylenetriamine, and triethylenetetramine.
In some embodiments of the invention, the radiation agent is selected from one or more of cobalt oxide, molybdenum disilicide, tantalum disilicide, and molybdenum disulfide.
In some embodiments of the present invention, the radiant coating slurry comprises, in parts by weight, 50 to 90 parts resin, 10 to 50 parts solvent, 3 to 10 parts coupling agent, 0.1 to 1 part catalyst, 15 to 30 parts radiant agent, and 20 to 30 parts filler.
In some embodiments of the invention, the filler comprises 15-28% of hydrophobic fumed silica, 60-70% of silica powder, boron nitride, andalusite powder and calcined alumina powder, 10-20% of metallic boron powder and metallic silicon powder, and 1-2% of beta-spodumene in percentage by weight.
In some embodiments of the present invention, the weight ratio of silica powder, boron nitride, andalusite powder and calcined alumina powder in the filler is 80 to 90:3 to 5:1 to 5:5 to 15; the weight ratio of the metal boron powder to the metal silicon powder is 2-4: 6 to 8.
In another aspect, the invention also provides a radiation coating, wherein the raw materials of the radiation coating comprise the radiation coating slurry.
In still another aspect, the present invention further provides a method for preparing the above-mentioned radiation coating, including the following steps: s1, mixing the radiation agent and the filler; s2, mixing the mixed powder obtained in the step S1 with the resin, the solvent and the additive, and ball milling and stirring uniformly to obtain radiation coating slurry; and S3, spraying the radiation coating slurry on the surface of the thermal protection material, and standing at normal temperature to obtain the radiation coating.
Compared with the prior art, the invention has the following beneficial effects:
(1) The radiation coating slurry comprises a solvent, an additive, a radiation agent, a filler, organic silicon resin and/or epoxy resin, wherein the components are cooperated to realize normal-temperature curing, can be subjected to standing curing at normal temperature without high-temperature treatment, and can be sprayed on the surface of a light thermal protection material to obtain a radiation coating suitable for the light thermal protection material; the coupling agent can also improve the compatibility between inorganic filler and resin and between resin and resin, hydrophobic fumed silica in the filler can also improve the rheological property and scratch resistance of the radiation coating slurry, and endow the radiation coating sprayed by the radiation coating slurry with good component uniformity, good surface state and the like, thereby being convenient for film formation and reducing the cracking probability; the radiation agent can endow the radiation coating prepared from the slurry with a radiation function, and radiate more than 90% of heat, so that the heat protection function of the light heat protection material under the radiation coating is ensured; the hydrophobic fumed silica in the filler and the organic silicon resin and/or the epoxy resin can also provide water-proof and moisture-proof performances, so that the radiation coating prepared from the slurry has water-proof and moisture-proof performances, and meets the water-proof and moisture-proof requirements of environments such as room temperature.
(2) The filler of the radiation coating slurry comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene, the bonding strength is provided by organic silicon resin and/or epoxy resin at low temperature, the radiation coating formed by spraying the slurry is gradually ceramic at medium temperature and high temperature along with the temperature rise, wherein the boron nitride, the metal silica powder and the metal boron powder undergo oxidation reaction within 1000 ℃ to form boron oxide and silicon oxide, the silicon oxide and the calcined alumina powder begin to react to form mullite at about 1300 ℃ along with the temperature rise, the andalusite powder is also converted into mullite, the volume expansion is small during the conversion of the andalusite powder, the temperature resistance can be improved, the thermal shock resistance of the radiation coating can be improved, the radiation coating is prevented from cracking, and the beta-spodumene is used as a fluxing agent, and the crystal expansion can be reduced to prevent the radiation coating from cracking along with the andalusite powder. The organic silicon resin and/or the epoxy resin are matched with the filler, and the components in the filler are subjected to the mutual synergistic interaction, so that the radiation coating has high temperature resistance and low cracking property, and can be stably used in an environment within 1500 ℃ although being cured at normal temperature, and has good moisture resistance, radiation performance, oxidation resistance and the like.
(3) The specific selection of the solvent, the coupling agent and the catalyst can be matched with organic silicon resin and/or epoxy resin and filler, so that the radiation coating slurry is endowed with a good film forming state, the components of the radiation coating slurry are more uniform, the radiation coating slurry is not easy to crack after spraying, the film forming property is good, and the surface state of the radiation coating after curing is good. In addition, the design of the content of each component in the radiation coating slurry, especially the design of the content of each component in the filler, is designed on the basis of maximizing the functions and the synergistic effect of each component, and the prepared radiation coating has better moisture resistance and high temperature resistance on the basis of the component designs.
(4) According to the preparation method, the radiation coating slurry is used as a raw material to prepare the radiation coating, the radiation coating can be obtained by normal-temperature curing, high-temperature heat treatment is not needed, the radiation coating can be used for light heat protection materials, and the prepared radiation coating has good waterproof and moistureproof performances and excellent high-temperature resistance, and can stably work at 1500 ℃ at most.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, various aspects related to the present invention will be described in detail with reference to the following specific embodiments, which are only for illustrating the present invention, but do not limit the scope and spirit of the present invention in any way.
Example 1:
the embodiment provides a normal temperature curing radiation coating slurry, which comprises resin, solvent, additive, radiation agent and filler. Wherein the resin is organic silicon resin and/or epoxy resin; the additive comprises a coupling agent and a catalyst; the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene.
In this embodiment, the solvent is selected from one or more of absolute ethanol, N-propanol, isopropanol, N-butanol, N 'N-dimethylformamide, N' N-dimethylacetamide and acetone.
In this embodiment, the coupling agent includes a silane coupling agent. Preferably, the silane coupling agent is selected from at least one of gamma-aminopropyl triethoxysilane, gamma-glycidol ether oxypropyl trimethoxysilane, vinyl triethoxysilane, benzyl trimethoxysilane and aminopropyl trimethoxysilane.
In this embodiment, the catalyst is selected from one or more of dibutyltin dilaurate, zinc naphthenate, butyl titanate, ethylenediamine, diethylenetriamine and triethylenetetramine.
In this embodiment, the radiating agent is selected from one or more of cobalt oxide, molybdenum disilicide, tantalum disilicide, and molybdenum disulfide.
In this example, the radiation coating slip comprises, by weight, 50 to 90 parts of resin, 10 to 50 parts of solvent, 3 to 10 parts of coupling agent, 0.1 to 1 part of catalyst, 15 to 30 parts of radiation agent, and 20 to 30 parts of filler.
In the embodiment, the filler comprises 15-28% of hydrophobic fumed silica, 60-70% of silica powder, boron nitride, andalusite powder and calcined alumina powder, 10-20% of metal boron powder and metal silicon powder, and 1-2% of beta-spodumene by weight percent.
In the embodiment, the weight ratio of the silica powder, the boron nitride, the andalusite powder and the calcined alumina powder in the filler is 80-90: 3 to 5:1 to 5:5 to 15; the weight ratio of the metal boron powder to the metal silicon powder is 2-4: 6 to 8.
The embodiment also provides a radiation coating, and the raw materials of the radiation coating of the embodiment comprise the radiation coating slurry of the embodiment.
The embodiment also provides a preparation method of the radiation coating of the embodiment, which comprises the following steps: s1, mixing a radiation agent and a filler; s2, mixing the mixed powder obtained in the step S1 with resin, a solvent and an additive, and performing ball milling and stirring uniformly to obtain radiation coating slurry; s3, spraying the radiation coating slurry on the surface of the thermal protection material, and standing at normal temperature to obtain the radiation coating.
In this example, the silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene in the radiator and filler are preferably screened through a 180 mesh screen prior to step S1. In the step S3, the radiation coating slurry can be sprayed on the surface of the thermal protection material by using a pneumatic spray gun with the caliber larger than 1mm, the spraying thickness can be controlled according to the requirement, and the radiation coating can be obtained by standing for about 24 hours after standing for 2 hours for surface drying and curing at normal temperature.
The performance index of the radiation coating of this embodiment is as follows: the highest temperature resistance can reach 1500 ℃, the emissivity is more than 0.85, the water absorption is less than 0.1%, and the quartz lamp at 1500 ℃ has no cracking damage after 1000s of examination.
Example 2:
the embodiment provides a normal temperature curing radiation coating slurry, which comprises resin, solvent, additive, radiation agent and filler. Wherein the resin is organic silicon resin; the additive comprises a coupling agent and a catalyst; the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene.
In this embodiment, absolute ethyl alcohol is used as the solvent.
In this embodiment, the coupling agent is a silane coupling agent: gamma-aminopropyl triethoxysilane.
In this example, dibutyltin dilaurate was used as the catalyst.
In this embodiment, cobalt oxide is used as the radiating agent.
In this example, the radiation coating slip comprises 90 parts by weight of resin, 10 parts by weight of solvent, 10 parts by weight of coupling agent, 1 part by weight of catalyst, 15 parts by weight of radiation agent and 20 parts by weight of filler.
In the embodiment, the filler comprises 15% of hydrophobic fumed silica, 70% of silica powder, boron nitride, andalusite powder and calcined alumina powder, 14% of metal boron powder and metal silicon powder, and 1% of beta-spodumene in percentage by weight.
In the embodiment, the weight ratio of silica powder, boron nitride, andalusite powder and calcined alumina powder in the filler is 80:5:5:10; the weight ratio of the metal boron powder to the metal silicon powder is 2:8.
the embodiment also provides a radiation coating, and the raw materials of the radiation coating of the embodiment comprise the radiation coating slurry of the embodiment.
The embodiment also provides a preparation method of the radiation coating of the embodiment, which comprises the following steps: s1, mixing a radiation agent and a filler; s2, mixing the mixed powder obtained in the step S1 with resin, a solvent and an additive, and performing ball milling and stirring uniformly to obtain radiation coating slurry; s3, spraying the radiation coating slurry on the surface of the thermal protection material, and standing at normal temperature to obtain the radiation coating.
In this example, the silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene in the radiator and filler are preferably screened through a 180 mesh screen prior to step S1. In the step S3, the radiation coating slurry can be sprayed on the surface of the thermal protection material by using a pneumatic spray gun with the caliber larger than 1mm, the spraying thickness can be controlled according to the requirement, and the radiation coating can be obtained by standing for about 24 hours after standing for 2 hours for surface drying and curing at normal temperature.
The performance index of the radiation coating of this embodiment is as follows: the highest temperature resistance can reach 1500 ℃, the emissivity is more than 0.8, the water absorption is less than 0.1%, and the quartz lamp at 1500 ℃ has no cracking damage after 1000s of examination.
Example 3:
the embodiment provides a normal temperature curing radiation coating slurry, which comprises resin, solvent, additive, radiation agent and filler. Wherein the resin is epoxy resin; the additive comprises a coupling agent and a catalyst; the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene.
In this embodiment, n-butanol is used as the solvent.
In this embodiment, the coupling agent is a silane coupling agent: vinyl triethoxysilane.
In this embodiment, triethylene tetramine is used as the catalyst.
In this embodiment, the radiation agent is molybdenum disilicide.
In this example, the radiation coating slip comprises, by weight, 50 parts of resin, 50 parts of solvent, 3 parts of coupling agent, 0.2 part of catalyst, 30 parts of radiation agent, and 30 parts of filler.
In the embodiment, the filler comprises 28% of hydrophobic fumed silica, 60% of silica powder, boron nitride, andalusite powder and calcined alumina powder, 10% of metal boron powder and metal silicon powder, and 2% of beta-spodumene in percentage by weight.
In the embodiment, the weight ratio of silica powder, boron nitride, andalusite powder and calcined alumina powder in the filler is 90:4:1:5, a step of; the weight ratio of the metal boron powder to the metal silicon powder is 4:6.
the embodiment also provides a radiation coating, and the raw materials of the radiation coating of the embodiment comprise the radiation coating slurry of the embodiment.
The embodiment also provides a preparation method of the radiation coating of the embodiment, which comprises the following steps: s1, mixing a radiation agent and a filler; s2, mixing the mixed powder obtained in the step S1 with resin, a solvent and an additive, and performing ball milling and stirring uniformly to obtain radiation coating slurry; s3, spraying the radiation coating slurry on the surface of the thermal protection material, and standing at normal temperature to obtain the radiation coating.
In this example, the silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene in the radiator and filler are preferably screened through a 180 mesh screen prior to step S1. In the step S3, the radiation coating slurry can be sprayed on the surface of the thermal protection material by using a pneumatic spray gun with the caliber larger than 1mm, the spraying thickness can be controlled according to the requirement, and the radiation coating can be obtained by standing for about 24 hours after standing for 2 hours for surface drying and curing at normal temperature.
The performance index of the radiation coating of this embodiment is as follows: the highest temperature resistance can reach 1500 ℃, the emissivity is more than 0.85, the water absorption is less than 0.1%, and the quartz lamp at 1500 ℃ has no cracking damage after 1000s of examination.
Example 4:
the embodiment provides a normal temperature curing radiation coating slurry, which comprises resin, solvent, additive, radiation agent and filler. Wherein the resin is organic silicon resin and epoxy resin; the additive comprises a coupling agent and a catalyst; the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene.
In this embodiment, isopropanol is used as the solvent.
In this embodiment, the coupling agent is a silane coupling agent: gamma-glycidoxypropyl trimethoxysilane.
In this example, zinc naphthenate and diethylenetriamine are used as catalysts.
In this embodiment, the radiating agent is selected from cobalt oxide and tantalum disilicide.
In this example, the radiation coating slip comprises, in parts by weight, 70 parts of resin (wherein 20 parts of epoxy resin, 50 parts of silicone resin), 30 parts of solvent, 6 parts of coupling agent, 0.5 part of catalyst (wherein 0.1 part of zinc naphthenate, 0.4 part of diethylenetriamine), 20 parts of radiation agent (wherein 15 parts of cobalt oxide, 5 parts of tantalum disilicide) and 25 parts of filler.
In the embodiment, the filler comprises 20% of hydrophobic fumed silica, 65% of silica powder, boron nitride, andalusite powder and calcined alumina powder, 13.5% of metal boron powder and metal silicon powder, and 1.5% of beta-spodumene in percentage by weight.
In the embodiment, the weight ratio of silica powder, boron nitride, andalusite powder and calcined alumina powder in the filler is 85:4:3:8, 8; the weight ratio of the metal boron powder to the metal silicon powder is 3:7.
the embodiment also provides a radiation coating, and the raw materials of the radiation coating of the embodiment comprise the radiation coating slurry of the embodiment.
The embodiment also provides a preparation method of the radiation coating of the embodiment, which comprises the following steps: s1, mixing a radiation agent and a filler; s2, mixing the mixed powder obtained in the step S1 with resin, a solvent and an additive, and performing ball milling and stirring uniformly to obtain radiation coating slurry; s3, spraying the radiation coating slurry on the surface of the thermal protection material, and standing at normal temperature to obtain the radiation coating.
In this example, the silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene in the radiator and filler are preferably screened through a 180 mesh screen prior to step S1. In the step S3, the radiation coating slurry can be sprayed on the surface of the thermal protection material by using a pneumatic spray gun with the caliber larger than 1mm, the spraying thickness can be controlled according to the requirement, and the radiation coating can be obtained by standing for about 24 hours after standing for 2 hours for surface drying and curing at normal temperature.
The performance index of the radiation coating of this embodiment is as follows: the highest temperature resistance can reach 1500 ℃, the emissivity is more than 0.78, the water absorption is less than 0.1%, and the quartz lamp at 1500 ℃ has no cracking damage after 1000s of examination.
The present invention has been described with reference to specific embodiments, which are merely illustrative, and not intended to limit the scope of the invention, and those skilled in the art can make various modifications, changes or substitutions without departing from the spirit of the invention. Thus, various equivalent changes may be made according to this invention, which still fall within the scope of the invention.
Claims (10)
1. A normal temperature solidified radiation coating slurry is characterized in that the radiation coating slurry comprises resin, solvent, additive, radiation agent and filler,
wherein the resin comprises a silicone resin and/or an epoxy resin;
the additive comprises a coupling agent and a catalyst;
the filler comprises hydrophobic fumed silica, silica powder, boron nitride, andalusite powder, calcined alumina powder, metal boron powder, metal silica powder and beta-spodumene.
2. The radiant coating slurry of claim 1, wherein the solvent is selected from one or more of absolute ethanol, N-propanol, isopropanol, N-butanol, N 'N-dimethylformamide, N' N-dimethylacetamide, and acetone.
3. The radiant coating slurry of claim 1, wherein the coupling agent comprises a silane coupling agent selected from at least one of gamma-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, vinyltriethoxysilane, benzyl trimethoxysilane, and aminopropyl trimethoxysilane.
4. The radiant coating slurry of claim 1, wherein the catalyst is selected from one or more of dibutyl tin dilaurate, zinc naphthenate, butyl titanate, ethylenediamine, diethylenetriamine, and triethylenetetramine.
5. The radiant coating slurry of claim 1, wherein the radiant agent is selected from one or more of cobalt oxide, molybdenum disilicide, tantalum disilicide, and molybdenum disulfide.
6. The radiant coating slurry of claim 1, wherein the radiant coating slurry comprises, in parts by weight, 50 to 90 parts resin, 10 to 50 parts solvent, 3 to 10 parts coupling agent, 0.1 to 1 part catalyst, 15 to 30 parts radiant agent, and 20 to 30 parts filler.
7. The radiant coating slurry of claim 1 wherein the filler comprises, by weight, 15 to 28% hydrophobic fumed silica, 60 to 70% silica powder, boron nitride, andalusite powder, and calcined alumina powder, 10 to 20% metallic boron powder and metallic silica powder, and 1 to 2% beta-spodumene.
8. The radiant coating slurry of claim 7, wherein the filler comprises silica powder, boron nitride, andalusite powder and calcined alumina powder in a weight ratio of 80 to 90:3 to 5:1 to 5:5 to 15; the weight ratio of the metal boron powder to the metal silicon powder is 2-4: 6 to 8.
9. A radiant coating wherein the raw materials of the radiant coating comprise the radiant coating slurry as set forth in any one of claims 1-8.
10. A method of producing a radiant coating as set forth in claim 9, comprising the steps of:
s1, mixing the radiation agent and the filler;
s2, mixing the mixed powder obtained in the step S1 with the resin, the solvent and the additive, and ball milling and stirring uniformly to obtain radiation coating slurry;
and S3, spraying the radiation coating slurry on the surface of the thermal protection material, and standing at normal temperature to obtain the radiation coating.
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